The advent of high-tech and big data will bring new opportunities and challenges to physical education in colleges and universities.Based on the big data platform,this paper Uses the literature material law,interview law,investigation and statistics law,analyzes the wearable devices and their application in College Physical Education.The wearable devices have great potential among university students.Wearable devices can prevent sports injuries,monitoring exercise intensity,standardizing technical actions,arousing students＇interest,evaluating teaching effects and innovating teaching modes.However,the use of wearable devices in physical education is still at the research and imagination stage,and still some problems to be solved in practical application.